Evidence map›Paper›PMID 18582375›Full record

ArticleMalaria journal2008

Suppression of Plasmodium falciparum by serum collected from a case of Plasmodium vivax infection.

Yoshiro Nagao, Masako Kimura-Sato, Porntip Chavalitshewinkoon-Petmitr, Supatra Thongrungkiat, Polrat Wilairatana, Takafumi Ishida, Peerapan Tan-Ariya, J Brian de Souza, Srivicha Krudsood, Sornchai Looareesuwan

Open access · goldAbstract readCase Reports
In one paragraph

Article in Malaria journal, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.2field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 20 citations in OpenAlex.

  1. The American journal of tropical medicine and hygiene · 2018
    Trial
  2. Malaria in Cambodia: A Retrospective Analysis of a Changing Epidemiology 2006-2019.International journal of environmental research and public health · 2021
    Article
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  12. Why do adaptive immune responses cross-react?Evolutionary applications · 2009
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 3 countries.

Yoshiro NagaoFaculty of Tropical Medicine, Mahidol University,420/6 Rajvithi Road, Bangkok, 10400, Thailand. in_the_pacific214@yahoo.co.jp
Masako Kimura-Sato
Porntip Chavalitshewinkoon-Petmitr
Supatra Thongrungkiat
Polrat Wilairatana
Takafumi Ishida
Peerapan Tan-Ariya
J Brian de Souza
Srivicha Krudsood
Sornchai Looareesuwan
Mahidol University · THMahidol Oxford Tropical Medicine Research Unit · THThe University of Tokyo · JPUniversity of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt has frequently been reported that Plasmodium vivax suppressed Plasmodium falciparum and ameliorated disease severity in patients infected with these two species simultaneously. The authors investigate the hypothesis that immunological responses stimulated by P. vivax may play a role in suppressing co-infecting P. falciparum.

methodsSera, taken sequentially from one of the authors (YN) during experimental infection with P. vivax, were added to in vitro cultures of P. falciparum. Cross-reactive antibodies against P. falciparum antigens, and cytokines were measured in the sera.

resultsSignificant growth inhibitory effects upon P. falciparum cultures (maximally 68% inhibition as compared to pre-illness average) were observed in the sera collected during an acute episode. Such inhibitory effects showed a strong positive temporal correlation with cross-reactive antibodies, especially IgM against P. falciparum schizont extract and, to a lesser degree, IgM against Merozoite Surface Protein (MSP)-119. Interleukin (IL)-12 showed the highest temporal correlation with P. vivax parasitaemia and with body temperatures in the volunteer.

conclusionThese results suggest the involvement by cross-reactive antibodies, especially IgM, in the interplay between plasmodial species. IL-12 may be one of direct mediators of fever induction by rupturing P. vivax schizonts, at least in some subjects. Future studies, preferably of epidemiological design, to reveal the association between cross-reactive IgM and cross-plasmodial interaction, are warranted.

Indexed as

AdultAnimalsAntibodies, ProtozoanAntigens, ProtozoanCross ReactionsHumansImmunoglobulin MInterleukin-12Malaria, VivaxMalePlasmodium falciparumPlasmodium vivaxSerumAntibodies, ProtozoanAntigens, ProtozoanImmunoglobulin MInterleukin-12

Identifiers

PMID18582375
PMCPMC2443373
OpenAlexW2116784302

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.